Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃

Dhital, Chetan; Huq, Ashfia; Paranthaman, Mariappan Parans; Manivannan, Ayyakkannu; Torres-Castro, Loraine; Shojan, Jifi; Julien, Christian M.; Katiyar, Ram S.

doi:10.1016/j.mseb.2015.07.006

Title: Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃

Abstract

Li₂MnO₃ is known to be electrochemically inactive due to Mn in tetravalent oxidation state. Several compositions such as Li₂MnO₃ , Li_1.5Al_0.17MnO₃, Li_1.0Al_0.33MnO₃ and Li_0.5Al_0.5MnO₃ were synthesized by a sol–gel Pechini method. All the samples were characterized with x-ray diffraction, Raman, x-ray photoelectron spectroscopy, scanning electron microscopy, Tap density and BET analyzer. X-ray diffraction patterns indicated the presence of monoclinic phase for pristine Li₂MnO₃and mixed monoclinic/spinel phases (Li_{2 - x}Mn_{1 - y}Al_{x + y}O_{3 + z}) for Al-substituted Li₂MnO₃compounds. The Al substitution seems to occur both at Li and Mn sites, which could explain the presence of spinel phase. X-ray photoelectron spectroscopy for Mn 2p orbital reveals a significant decrease in binding energy for Li_1.0Al_0.33MnO₃ and Li_0.5Al_0.5MnO₃ compounds. Cyclic voltammetry, charge/discharge cycles and electrochemical impedance spectroscopy were also performed. A discharge capacity of 24 mAh g^-1 for Li₂MnO₃, 68 mAh g^-1 for Li_1.5Al_0.17MnO₃, 58 mAh g^-1 for Li_1.0Al_0.33MnO₃ and 74 mAh g^-1 for Li_0.5Al_0.5MnO₃ were obtained. As a result, aluminum substitutions increased the formation of spinel phase which is responsible for cycling.

Authors:

Dhital, Chetan ^[1]; Huq, Ashfia ^[1]; Paranthaman, Mariappan Parans ^[1]; Manivannan, Ayyakkannu ^[2]; Torres-Castro, Loraine ^[3]; Shojan, Jifi ^[3]; Julien, Christian M. ^[4]; Katiyar, Ram S. ^[3]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
National Energy Technology Lab. (NETL), Morgantown, WV (United States); West Virginia Univ., Morgantown, WV (United States)
Univ. of Puerto Rico, San Juan (Puerto Rico)
Univ. Pierre et Marie Curie, Paris (France)

Publication Date:: Sat Aug 08 00:00:00 EDT 2015

Research Org.:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1213338

Alternate Identifier(s):: OSTI ID: 1359593

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Materials Science and Engineering. B, Solid-State Materials for Advanced Technology

Additional Journal Information:: Journal Volume: 201; Journal Issue: C; Journal ID: ISSN 0921-5107

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; lithium ion battery; energy storage; Li₂MnO₃ cathode; Al substitution

Citation Formats


                    Dhital, Chetan, Huq, Ashfia, Paranthaman, Mariappan Parans, Manivannan, Ayyakkannu, Torres-Castro, Loraine, Shojan, Jifi, Julien, Christian M., and Katiyar, Ram S. Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃.  United States: N. p., 2015. 
Web.  doi:10.1016/j.mseb.2015.07.006.

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                    Dhital, Chetan, Huq, Ashfia, Paranthaman, Mariappan Parans, Manivannan, Ayyakkannu, Torres-Castro, Loraine, Shojan, Jifi, Julien, Christian M., & Katiyar, Ram S. Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃.  United States.  https://doi.org/10.1016/j.mseb.2015.07.006

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                    Dhital, Chetan, Huq, Ashfia, Paranthaman, Mariappan Parans, Manivannan, Ayyakkannu, Torres-Castro, Loraine, Shojan, Jifi, Julien, Christian M., and Katiyar, Ram S. Sat .  
"Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃".  United States.  https://doi.org/10.1016/j.mseb.2015.07.006.  https://www.osti.gov/servlets/purl/1213338.

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@article{osti_1213338,

  title        = {Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃},

  author       = {Dhital, Chetan and Huq, Ashfia and Paranthaman, Mariappan Parans and Manivannan, Ayyakkannu and Torres-Castro, Loraine and Shojan, Jifi and Julien, Christian M. and Katiyar, Ram S.},

  abstractNote = {Li2MnO3 is known to be electrochemically inactive due to Mn in tetravalent oxidation state. Several compositions such as Li2MnO3 , Li1.5Al0.17MnO3, Li1.0Al0.33MnO3 and Li0.5Al0.5MnO3 were synthesized by a sol–gel Pechini method. All the samples were characterized with x-ray diffraction, Raman, x-ray photoelectron spectroscopy, scanning electron microscopy, Tap density and BET analyzer. X-ray diffraction patterns indicated the presence of monoclinic phase for pristine Li2MnO3and mixed monoclinic/spinel phases (Li2 - xMn1 - yAlx + yO3 + z) for Al-substituted Li2MnO3compounds. The Al substitution seems to occur both at Li and Mn sites, which could explain the presence of spinel phase. X-ray photoelectron spectroscopy for Mn 2p orbital reveals a significant decrease in binding energy for Li1.0Al0.33MnO3 and Li0.5Al0.5MnO3 compounds. Cyclic voltammetry, charge/discharge cycles and electrochemical impedance spectroscopy were also performed. A discharge capacity of 24 mAh g-1 for Li2MnO3, 68 mAh g-1 for Li1.5Al0.17MnO3, 58 mAh g-1 for Li1.0Al0.33MnO3 and 74 mAh g-1 for Li0.5Al0.5MnO3 were obtained. As a result, aluminum substitutions increased the formation of spinel phase which is responsible for cycling.},

  doi          = {10.1016/j.mseb.2015.07.006},

  journal      = {Materials Science and Engineering. B, Solid-State Materials for Advanced Technology},

  number       = C,

  volume       = 201,

  place        = {United States},

  year         = {Sat Aug 08 00:00:00 EDT 2015},

  month        = {Sat Aug 08 00:00:00 EDT 2015}

}

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Alleviating oxygen evolution from Li-excess oxide materials through theory-guided surface protection
journal, November 2018

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Title: Synthesis, characterization and electrochemical performance of Al-substituted Li₂MnO₃

Abstract

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